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(No Model.)

'J. M. COLLINS.

THILL COUPLING.

110.262.7 11. Patented Aug. 15, 1882.

UNITED STATES PATENT OFFICE.

JOHN M. COLLINS, OF SI. LOUIS, MISSOURI.

THlLL-OOUPLING.

SPECIFICATION forming part of Letters Patent No. 262,741, dated August15, 1882.

Application filed March 10, 1882.

To all whom it may concern:

Be it known that I, JOHN M. COLLINS, of St. Louis, Missouri, have made anew and useful Improvement in Thin-Couplings, of which the following isa full, clear, and exact desciiption, reference being had to the annexeddrawings, making part of this specification, in which Figure 1 is a viewin perspective of the improved coupling; Fig. 2,-a view in perspective,showing the various parts used in forming the coupling, but detachedfrom each other; and Fig. 3, a sectionalview of the coupling.

The same letters denote the same parts.

The presentinvention is an improved means for preventing chill-couplingsfrom rattling.

In the present device the thill-iron has a tapered eye fitted to abearing of corresponding shape upon the axle-clip,the improvementconsisting,in combination with such parts, of the means employed insecuring them in position.

In the annexed drawings, A represents the axle, B the axle-clip, and Gthe thill-iron. The clip has an extension, b, upon the side of which isa conoidalbearing, b. The thill-iron eye 0 is shaped correspondingly totit the bearing 1), the two parts being combined in the manner shown inFig. 3 and held together by the boltD. As the parts are originallyfitted, the thill-iron does not come closely against the shoulder b atthe inner end of the bearing 1), space being left for slipping thethill-iron eye from time to time, as the parts become worn, farther ontothe clip-bearing. The hearing I) and extension I) are perforatedlongitudinally (No model.)

to receivethe bolt D, as shown in Figs. 1 and 3, the bolt passingthrough the eye, clip-bearing, and extension, and having a nut, d, uponits inner end. The nut, however, is in effect a lock-nut, for I haveascertained in practice that it will not answer to simply pass the boltthrough the clip and rely upon the nut for bolding the parts in place,for when thus made the thill-iron works loose. Accordingly, theperforation in the clip at b is threaded to e11 able the bolt to engagetherewith, the bolt being screwed into the clip at the point 11 andsufficiently to bring the thill-iron eye into the desired position uponthe clip-bearing, and then the nut d is screwed against the face Zr ofthe clip, in which position it acts as a lockout and efl'ectuallyprevents the bolt from unscrewing in the clip.

I am aware that a conical bolt has been used in the conical eye of thecarriage-shaft; also, that a clip having two conical projections,adapted to fit like depressions, one on each side of the end of the armof the shaft, and I do not claim such construction.

I claim A The combination of the thill-iron 0, having a conoidal eye, 0,extending across its end, and the headed bolt D and nut d, with the clipB, having extension I), and conoidal bearing 1), adapted to extendnearly through eye 0, its central perforation screw-threaded at W, allsubstantially as shown and described.

, JOHN M. COLLINS.

Witnesses O. D. MOODY, CHARLES PIoKLEs.

